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the bottle is placed in the rack, and the siphon inserted. A rubber tube leading from the distilled water tap is then connected to the lower end of the siphon and the bottle filled. The strong current of water entering a t the deepest part of the solution acts as sufficient stirrer to thoroughly mix the solution and secure uniform density. In this way a large number of bottles can be compactly stored and the solutions are easy of access. The framework structore allows the bottles to be cleaneddoi:10.1021/ja01925a008 fatcat:2346f2frfbf2jifuwanrqxsq64